<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>边框样式</title>
<style type="text/css">
h2{border-style:double;}
.one{border-top-style:dotted;
      border-bottom-style:dotted;
	  border-left-style:solid;
	  border-right-style:solid;}
	  .two{border-style:solid  dotted dashed;
		  }


</style>
</head>

<body>
<h2>双实线</h2>
<p class="one">上下点线，左右单实线。</p>
<p class="two">上单实线，左右 点线，下虚线。</p>
</body>
</html>
